<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>生成二维码</title>
</head>
<body>
    <h1>欢迎生成二维码</h1>
    <form action="doCreateQR" method="post">
        <!-- table是表格，<tr>是行，<td>是列 -->
        <table border="1">
            <tr>
                <td>请输入信息</td>
                <td><input name="msg" type="text" size="32"></td>
            </tr>
            <tr>
                <!-- 合并左右格，内容居中 -->
                <td colspan="2" align="center">
                    <input type="submit" value="生成" width="90px"/>
                </td>
            </tr>
        </table>
    </form>
</body>
</html>